Two-step continuous-flow synthesis of CuInSe2 nanoparticles in a solar microreactor
Abstract
A novel method of copper indium diselenide nanoparticle (CuInSe2 NP) synthesis using a two-step, continuous flow, solar microreactor is reported here. This method allows for exceedingly fast heating and short reaction times using only radiative heat transfer from simulated, concentrated solar radiation. Chalcopyrite and sphalerite CuInSe2 phases have both been synthesized by changing nucleation temperature and residence time through the solar microreactor, with higher nucleation temperatures and longer residence times allowing for the formation of the chalcopyrite CuInSe2 phase.